DreamWorks Releases Software Used in 'Guardians'

DreamWorks Animation SKG Inc., after spending years developing specialized software used to make one of its most expensive movies ever, is giving it away free to competitors.

The studio released onto the open market one of the primary tools used to create "Rise of the Guardians," a $145 million animated film set to hit theaters Wednesday. The software, known as Open VDB, allows animators to more easily create...